It is time for the Teletubbies to have Tubby Custard! But Dipsy has an accident. He accidentally spills his custard all over his seat. Tinky Winky, Laa-Laa and Po sit down on their tubby seats, but Dipsy doesn't want to sit down. He doesn't want to sit in the tubby custard because he has nowhere to sit. So Laa-Laa lets him sit on her tubby seat. But then Laa-Laa has nowhere to sit. She doesn't want to sit in the tubby custard. So Po lets her sit on her tubby seat. But then Po has nowhere to sit. She doesn't want to sit in the tubby custard. So Tinky Winky lets her sit on his seat. But then Tinky Winky has nowhere to sit. He doesn't want to sit in the tubby custard.
So Laa-Laa and Dipsy want him to sit on their seats, but he can't decide to seat to sit on. Po sits on Laa-Laa's seat. Tinky Winky sits on Po's seat. Laa-Laa and Dipsy want to sit down. They see Tinky Winky's seat and try to sit on it, but there is not enough room! Po gives her seat to Dipsy and Laa-Laa so she sits on Tinky Winky's seat. They try to sit on that seat, but there is not enough room either! Then they both fall over. Dipsy gets up and sits on Laa-Laa's seat. But Laa-Laa has nowhere to sit. She doesn't want to sit in the tubby custard so she sings a song and the others join her. The Noo-Noo tidies up the custard off of Dipsy's seat. Laa-Laa has somewhere to sit. She sits on the seat.
All the Teletubbies are sitting down, but they sit in the wrong places so they change places. The Teletubbies sit in their own seats and then it is time for them to eat their custard. But then the Magic Windmill spins. The Teletubbies say Uh-Oh! and they run outside and eventually, the Magic Windmill Stops Spinning and then Tubby Bye-Bye happens.
- In Urban Birds, when the Windmill spins, the Magic Event tune plays. However when the Teletubbies run off, the Windmill stops spinning. In Uh Oh! Messes and Muddles, the Windmill spins with the TV Event tune and the Teletubbies watch the Bubble Pictures video.